All that night, as there has been and will be for ages past and to come, a rushing sound was heard, as if a great tempest were sweeping through the air. It mingled with my dreams, and made them full of storm and whirlwind. Whenever I awoke, and heard this dread sound in the air, and the windows rattling as with a mighty blast, I could not rest again, till looking forth, I saw how bright the stars were, and that every leaf in the garden was motionless. Never was a summer night more calm to the eye, nor a gale of autumn louder to the ear. The rushing sound proceeds from the rapids, and the rattling of the casements is but an effect of the vibration of the whole house, shaken by the jar of the cataract. The noise of the rapids draws the attention from the true voice of Niagara, which is a dull, muffled thunder, resounding between the cliffs. I spent a wakeful hour at midnight, in distinguishing its reverberations, and rejoiced to find that my former awe and enthusiasm were reviving. Gradually, and after much contemplation, I came to know, by my own feelings, that Niagara is indeed a wonder of the world, and not the less wonderful, because time and thought must be employed in comprehending it. Casting aside all preconceived notions, and preparation to be dire-struck or delighted, the beholder must stand beside it in the simplicity of his heart, suffering the mighty scene to work its own impression. Night after night, I dreamed of it, and was gladdened every morning by the consciousness of a growing capacity to enjoy it. Yet I will not pretend to the all-absorbing enthusiasm of some more fortunate spectators, nor deny that very trifling causes would draw my eyes and thoughts from the cataract.